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Finding the Fourth Proportional to 977,262.80, 1,469,830.80 and 874,911.20

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Solution

The fourth proportional to 977,262.80, 1,469,830.80 and 874,911.20 is: 1,315,891.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,262.80 : 1,469,830.80 = 874,911.20 : x
  2. Step 2: Convert to fraction form
    977,262.80/1,469,830.80 = 874,911.20/x
  3. Step 3: Cross multiply
    977,262.80x = 1,469,830.80 × 874,911.20
  4. Step 4: Simplify right side
    977,262.80x = 1,285,971,429,024.96
  5. Step 5: Solve for x
    x = 1,285,971,429,024.96/977,262.80
  6. Step 6: Final answer
    x = 1,315,891.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.